Clue is the #1 period tracker and ovulation calculator app that combines science and reproductive health research to help you discover unique patterns of your menstrual cycle. Millions of people use Clue for free as a period tracker and health app to get PMS and period predictions and to receive notifications of menstrual cycle changes reminders to track ovulation fertility cravings and more.

Rated the #1 free period tracker app by the journal Obstetrics & Gynecology | Featured in Buzzfeed The New York Times Wired & more

CLUE APP TOP FEATURES:
✔ Period tracking | Track past periods and predict future ones
✔ PMS tracker | Know when PMS symptoms are coming
✔ Period calendar | View your personal period diary and cycle history
✔ Menstrual cycle symptoms | Go beyond periods and track sex pain sleep moods cervical fluid energy levels and more
✔ Ovulation calendar and fertility tracker | Receive predictions of ovulation days and see your fertile days with the fertility calculator
✔ Plan a Pregnancy | View your fertility window and ovulation days
✔ Birth control | Log your birth control type and set daily pill reminders to take the birth control pill

SMARTER PERIOD PREDICTIONS ACCURATE OVULATION TRACKER
• Learns from the data YOU put in (the more you use it the smarter it gets)
• Predicts when you’re fertile (fertility tracker) and ovulating (ovulation tracker & ovulation calendar)
• Can help support your ability to get pregnant

INSIGHTS INTO YOUR PERIOD CYCLES
• Period tracker I Get timely predictions of when your next period is coming
• Customize push notifications within the Clue App to remind you when PMS fertility (fertility tracker) and ovulation (ovulation tracker) and your next period (period tracker) are predicted to happen.
• Log menstruation days and track menstrual flow (period flow) for improved period predictions each cycle

PERSONALIZED HEALTH TRACKER FOR WOMEN & TEENS
• 30+ customizable health categories
• Track cycle symptoms such as emotions skin hair sleep exercise and more; learn how changes in your cycle affect your daily health and fitness
• View past and future period days PMS symptoms and input birth control method

SCIENCE-BACKED RESEARCH & INSIGHTS BEYOND YOUR PERIOD CYCLE
• Get accurate ovulation calculator and period cycle data (period tracker) based on your menstrual flow and menstrual cycles. Bring Clue to your next gynecologist appointment and have your cycle history handy.
• Read in-depth scientific research within the Clue App about your menstrual flow (period tracker) cycle analysis fertility PMS ovulation (ovulation calculator) and period (period calculator)

SUBSCRIBE TO CLUE PLUS & LEARN MORE ABOUT YOUR PERIOD & CYCLES
• Analysis Feature | Get a detailed look at your period cycle length (period tracker) menstrual cycle length and cycle variation and receive alerts when anything is out of the normal range for your age and birth control type
• Forecast Feature | Know when you might experience cravings menstrual cramps and other patterns in your period cycle

1-month subscription for $0.99
12-month subscription for $9.99

Note: Clue Period Tracker App should *not* be used as a contraceptive.

We love hearing from Clue Period Tracker App users! Send your feedback questions and suggestions to [email protected].

Want more educational content from Clue? Read all about periods sex and menstrual cycle health at helloclue.com.

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Join over 10 million women teens and people with cycles and download the Clue Period Tracker and Ovulation Tracker App on Android to track your menstrual cycle period flow PMS ovulation fertility and more.